Improvement in door-bell



V w. ALLPORT.

Door Bell.

Patented Dec. 29, 1868 Win65; as.

lG-FETEN. PHOTO-LITHOGRAPMER, WASHINGYON, D. C,

' dilated WW WILLIAM A'LLPO'RT, OF NEW BRITAIN, CONNECTICUT.

Letters Patent No. 85,352, dated December 29, 1868.

r IMPROVEMENT IN DOOR-BELL.

To all whom it ma/y concern:

Be it known that I, WILLIAM ALLPORT, of the town of New Britain, countyof Hartford, and State of Connecticut, have invented an improvement inDoor-Bells; and I do hereby declare that the following is a full andexact description thereof, reference being had to the accompanyingdrawings, and to the letters of reference marked thereon, making a partof this specification.

The nature of my invention consists in an improved device, whereby thepull-spindle of a door-bell is made to actuate the bell-hammer orclapper twice by a single pull at the knob, that is to say, once at eachinward and once at each outward movement of the spindle; also, inso'locating the spindle aforesaid that the line of its direction willpass through the centre of the bell.

To enable others skilled in the artto make and use my invention, I willproceed to describe its construction and operation.

a is the base plate of a stationary door-bell.

b is the bell proper.

c is the standard upon which the bell is supported, and by which it isfirmly afiixed to the base-plate aforesaid.

e' is the pull-spindle, passing through the base-plate, terminated atone end with a knob, at the other end connecting with the spring f bymeans of the pin g.

f is a spring, of any'suitable metal or form, the one shown in thedrawing being a combined spiral and lever-spring, firmly. aflixed to thebase-plate at f, and the flexible end passing under 'the pin y andaround the spindle e, in such manner as to constantly press thepull-spindle e in the direction of the bell.

g is a pin, having the oflice aforesaid.

h is a lever, swinging upon a pin or rivet, its short end connected, bymeans of the trip at, with the extreme end of the spring f.

i is the pin or rivet last mentioned.

j is a rod, extending from the long end of the lever h to the hammerproper 7a, which strikes the bell.

lis a spring, 'so located and operating as to constantly press the smallend of the lever 72 toward the pull-spindle e and underneath the springf, thus throwing the longer arm of the lever h outward, and the distancein either direction to make a ratchet-concea tion with the spring f,whether the spring is being depressed or being relaxed. I

The various parts having been thus described, itwill at once be obviousthat if the pull-spindle c be drawn outward by power applied to theknob, the flexible end aforesaid of the spring f will be depressed inthe direction of the base-plate a. The spring 1', in its turn operatingupon the-trip 112,, will first throw the end of the trip m, upon whichit acts, as far in theline of its (the springs) direction as said endcan go, and thenwill force the short arm of thelever h outwardly, thuswithdrawing the hammer from the bell, preparatory to a blow. It will nowbe seen that, as soon as the spring f is depressedso as to pass by theend of the trip m, the lever 71:, actuated by the spring I, will throwthe hammer k'against the hell I). Now, let the hold upon the knob berelaxed, and it will be seen that the spring f, in returning to itsplace, will reverse the trip m, throwback the. lever 71, elevate thehammer for its blow, which will take place as soon as the end of thespring f passes by the end of the trip m, and allows the spring I to actagain.

Having thus described my invention, I proceed to claim- The combinationof the pull-spindle e, the spring 1, the trip 'm, the lever h, and thespring I with. the hell I), when adjusted and operating substantially asand for the purpose described.

i WM. ALLPORT. Witnesses:

J AMES SHEPARD,

O. E. MITCHELL.

